ZIP 34000 at a glance

USPS status
ActiveOn USPS’s APO/FPO/DPO table as of October 1, 2026.
Post office
Not confirmedWe can’t tell whether 34000 is an APO, FPO or DPO ZIP. The evidence is missing or the sources disagree, so check with the recipient before choosing one.
Region
AA, Armed Forces AmericasCovers Central America, South America and the Caribbean (not Canada).
Delivery group
Central America, South America and the CaribbeanUSPS groups ZIP prefix 340 together for delivery-time estimates.
Exact location
Not publishedUSPS and the Department of Defense don’t disclose which base, ship or embassy a ZIP serves. That protects the people there. If you need to know, ask the recipient.

How to write an address for 34000

Use the recipient’s own unit and box. The last line is the only part this ZIP decides.

Don’t add a base, city or country. If a form asks for a country, choose United States.

What ZIP 34000 restricts

USPS lists 7 mailing restrictions for this ZIP, 6 of them bans on specific items. Restrictions are set per ZIP, so another ZIP in the same region can differ.

Can’t be sent

  • Cigarettes and all other tobacco products(C)
  • E-cigarettes, vapes, e-liquids and their parts(C2)
  • Firearms, except to or from official U.S. agencies(F)
  • Replica weapons, inert explosives and weapon parts(F3)
  • Alcoholic beverages(R)
  • Synthetic cannabinoids (K2, Spice)(S)

Paperwork and approvals

  • Customs form PS 2976 or 2976-A for anything 16 oz or heavier, and for any merchandise at any weight. Priority Mail Express Military Service needs PS 2976-B.(B)

USPS codes for 34000: B-C-C2-F-F3-R-S. What each code means.